When I got to my bike yesterday afternoon, the rear tire was flat, which wasn't good because I was on the hook for BBQing the beef tenderloin that we and our friends were getting together to have so I had to call my son for a ride home. I fixed the tube last night but it was late by the time I got to it so I rushed it.

This morning, the winds were howling around our house and there was a bit of horizontal rain so I donned my raincoat, helmet cover and off I went. About 2km from work, my rear tire felt sloppy so I stopped and, ANOTHER FLAT!!! It wasn't fully flat, just very soft so I stood on the pedals and leaned forward to reduce the load on the rear tire, rode about 1/2 the remaining distance and walked the rest. Guess what I'm doing during morning break!

I've come to the conclusion that I'd rather have heavy, puncture-resistant tires and tubes than worry about weight. I'm going to start looking for some 40-50mm wide puncture-resistant knobby 29er/700c tires. I have some 35mm Schwalbe Marathons that I'm pleased with, I need the wider, knobbier tires for riding to the cottage on the dirt road. Suggestions would be appreciated.